m8: import cpu-boost from CAF, myfluxi, and franciscofranco

Also add config for it.

Conflicts:
	drivers/cpufreq/Makefile
cpufreq: cpu-boost: Export cpu boost status

* This will help hotplug drivers to know boost status
  of CPU and act accordingly.

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>

Conflicts:
	include/linux/cpu.h

Conflicts:
	include/linux/cpu.h